Costco is good for some things like wild caught salmon, certain berries, certain cuts of meat, etc. We don’t buy much of the pre made stuff, or breads, and the ones around here don’t have enough produce variety. But it’s definitely good for stocking up on certain items.Honestly, from an efficiency standpoint, Costco is tough to beat for an (almost) one-stop shop. Sure, you may find better prices if you shop hard, but there is some value in time....especially when you have a family of 5. Plus the cost of fuel must be considered.